fix typo in `SchemaNode` documentation
Add Portuguese translations
Merge pull request #56 from teixas/translations-0.9.7

Add Portuguese translations
Update german translation
	Allow use of 'None' as 'missing' for Numbers.
Allow the use of 'missing=None' for Number
- Create a ``colander.Money`` type that is a Decimal type with
  two-decimal-point precision rounded-up.

- Allow ``quant`` and ``rounding`` args to ``colander.Decimal`` constructor.
- ``luhnok`` validator added (credit card luhn mod10 validator).
anticipate noninteger input in luhnok
- Add an ``insert`` method to SchemaNode objects.
Features
~~~~~~~~

- Better class-based mapping schema inheritance model.

  * A node declared in a subclass of a mapping schema superclass now
    overrides any node with the same name inherited from any superclass.
    Previously, it just repeated and didn't override.

  * A ``schema_order`` attribute may be passed to SchemaNode constructor.
    This is an integer which defines the position in a parent node's child
    ordering.

  * ``colander.FIRST`` and ``colander.LAST`` constants are available for
    passing in as ``schema_order``.

Backwards Incompatibilities
~~~~~~~~~~~~~~~~~~~~~~~~~~~

- The inheritance changes required a minor backwards incompatibility: calling
  ``__setitem__`` on a SchemaNode will no longer raise ``KeyError`` when
  attempting to set a subnode into a node that doesn't already have an
  existing subnode by that name.  Instead, the subnode will be appended to
  the child list.

Documentation
~~~~~~~~~~~~~

- A "Schema Inheritance" section was added to the Basics chapter
  documentation.
replace schema_order with insert_before.  closes #58
Merge pull request #55 from aatiis/patch-1

fix typo in `SchemaNode` documentation
garden
restore py3 compat
Made it possible to have multiple preparers.
Now check for the existence of an __iter__ function as opposed type(self.preparer) == list, as per mcdonc's request.
Now use the is_nonstr_iter function, from colander.compat
Removed all stray whitespace.
Wrote a test for multiple preparers.